So how do we choose when to buy is not 304 steel? The current way to the naked eye is harder to distinguish. There is stainless steel on the market identification of stainless steel by detecting the content of nickel in the stainless steel to detect different types of stainless steel but does not guarantee that other elements in the steel will affect the accuracy of the results. There is through the magnetic and non-magnetic to determine, Generally magnetic is two series of stainless steel, non-magnetic is three series of stainless steel when these two methods can not be more accurate to determine whether it is 304 stainless steel.

Best Kitchen Sink Buying Tips: The optional sink is focused on two points, one material; the second is the style. Standard sink material is stainless steel, artificial stone, ceramics, stone products and cast iron sink, etc.Depending on the owner's preferences and the overall style of the kitchen may be.

And then the national standard copper is by the national standard GB18145-2014 requirements of the copper. The national standard and metal pollutants precipitation standard requirements. The national standard copper again HPb59 copper (copper content ≥ 59%, the national market mainstream, and exports to most European countries Are the kind of copper.